Latest Spectral Analysis Articles and Videos

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What is it About Audio Distortion? Understanding Nonlinearity

Learn about how system nonlinearity creates distortion in audio signals that impacts the sounds we hear. We will examine sine waves, harmonics, and intermodulation distortion.

April 10, 2022 by John Woodgate

New Technique Side-steps Shot Noise for Precision Optics in a Photonic IC

A new technique eliminates the limitations of shot noise on laser interferometry.

November 16, 2021 by Jake Hertz

What Is the Power Spectrum of Quantization Noise?

Our series on quantization noise begins with a clarification of the framework the author used to determine the scope of his investigation into quantization noise.

March 07, 2021 by Wes Brodsky

Modeling ADCs Using Effective Number of Bits (ENOB)

Learn about the concept of ENOB (effective number of bits) and how it can be used in modeling data converters in system simulations.

February 26, 2021 by Wes Brodsky

PCB Layout Techniques for Reducing Harmonic Distortion of a Differential ADC Driver

Summary

February 19, 2021 by Dr. Steve Arar

In a Reach for Industry 4.0, ADI Unveils Condition-Based Monitoring Dev Kit

Condition-based monitoring is important to consider when designing with vibration in mind, especially in IoT and industrial applications. A new development platform knits together resources for hardware designers, software engineers, and algorithm developers alike.

February 08, 2021 by Adrian Gibbons

Reducing Distortion in Tape Recordings with Hysteresis in SPICE

Summary

January 24, 2021 by Kevin Aylward

Reducing Second Harmonic Distortion with Symmetrical PCB Layout

Need a low-distortion ADC interface? In this article, we'll discuss how to reduce 2nd harmonic distortion by using symmetric PCB layout.

January 18, 2021 by Dr. Steve Arar

Computing Fast Fourier Transforms on the LPC55S69 MCU

This article investigates the Transform Engine, another part of the PowerQuad, which enables the LPC55S69 MCU to compute a Fast Fourier Transform (FFT).

December 17, 2020 by Eli Hughes, NXP Semiconductors

How the PowerQuad Co-processor Frees Up CPU Cores in the LPC55S69 MCU

In this article, learn about the PowerQuad co-processor and its role in performing CPU-heavy tasks to allow the Arm Cortex-M33 cores to execute other tasks in the LPC55S69 MCU.

November 19, 2020 by Eli Hughes, NXP Semiconductors

Researchers in Japan Claim New Quantum Circuit Can Compute the Fast Fourier Transform

Looking to build upon pre-existing quantum Fourier transform implementations, researchers in Japan have turned to the Fast Fourier Transform.

October 20, 2020 by Jake Hertz

What Is the Sinc Function and Why Is It Important in Electrical Engineering?

This Frequent Engineering Question gives a quick overview of a mathematical function that appears frequently in digital signal processing.

September 23, 2020 by Robert Keim

What Is the Fourier Transform?

This article gives you essential information on a mathematical technique that plays an absolutely fundamental role in system design and signal processing.

July 30, 2020 by Robert Keim

Anti-Aliasing Filters: Applying Sampling Theory to ADC Design

This article examines an important aspect of the Nyquist–Shannon sampling theorem and explains its connection to the need for anti-aliasing filters in analog-to-digital conversion.

May 20, 2020 by Robert Keim

The Nyquist–Shannon Theorem in the Frequency Domain

This article continues our discussion of sampling theory and introduces the concept of aliasing.

May 07, 2020 by Robert Keim

The Longer the PCB Trace, the Greater the Signal Distortion. Redrivers Can Help

Laptop or desktop PC designers know the woes of USB signal loss down a 12-inch PCB trace. The good news is there's a device purpose-built to strengthen signals the whole way across.

April 10, 2020 by Dr. Steve Arar

How Do You Design an LC Low-Pass Filter for a Class D Amp?

What's the role of low-pass filters in class D amplification? We'll use ST's new class D amp to discuss this question.

March 09, 2020 by Robert Keim

Assessing the ADC SNR and SFDR for Communications Systems

In this article, we will see how we can determine the SFDR for an ADC used in a radio receiver. Also, we’ll examine the ADC SNR requirement for this application.

December 22, 2019 by Dr. Steve Arar

Understanding Different Definitions of the Spurious Free Dynamic Range (SFDR) Specification

In this article, we’ll look at the spurious free dynamic range (SFDR) which is a popular specification for quantifying the linearity of a circuit.

December 01, 2019 by Dr. Steve Arar

Noise in Electronics Engineering: Distribution, Noise RMS and Peak-to-Peak Value, and Power Spectral Density

In this article, we’ll first examine an important feature of common noise sources: the relationship between the noise root mean square (RMS) and peak-to-peak value.

November 20, 2019 by Dr. Steve Arar